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Wetzlar, Germany

Ernst Leitz G.m.b.h.

USPTO Granted Patents = 31

Trademarks = 1

Forward Citations = 518

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35 inventors (with patents filed for the assignee):

Ludwig Leitz (6 out of 6 patents)

Heinz Broemer (4 out of 18 patents)

Werner H Holle (4 out of 5 patents)

4. Knut Heitmann (3 out of 13 patents)

5. Hans-Herbert Kaes (3 out of 3 patents)

6. Walter Bletz (3 out of 4 patents)

7. Norbert Meinert (2 out of 3 patents)

8. Hans-Dieter Jacoby (2 out of 2 patents)

9. Helmuth Frenk (2 out of 2 patents)

10. Rudolf Bohme (1 out of 1 patent)

11. Klaus Heinecke (1 out of 1 patent)

12. Fromund Hock (1 out of 1 patent)

13. Emanuel Pfeil (1 out of 1 patent)

14. Hermann Eisenkopf (1 out of 1 patent)

15. Knut Heitman (1 out of 1 patent)

31 patents: Sort by Forward Citations

1. 4135819 - Apparatus for measuring the aggregation rate of particles (1979-01-23),

2. 4131597 - Bioactive composite material process of producing and method of using (1978-12-26),

3. 4091281 - Light modulation system (1978-05-23),

4. 4087153 - Binoculars with double hinge bridge and resilient biasing (1978-05-02),

5. 4080611 - Apparatus for storing a voltage analogous to an exposure parameter in (1978-03-21),

6. 4071772 - Apparatus for measurement of mechanical aberrations affecting (1978-01-31),

7. 4071297 - Method and apparatus for photoelectrically determining the position of (1978-01-31),

8. 4056760 - Method of driving a two coordinate oscillator and circuit arrangement (1977-11-01),

9. 4048492 - Method and apparatus for automatic focusing an optical system with a (1977-09-13),

10. 4047189 - Electronic storage, indicator and exposure time control device for (1977-09-06),

11. 4047022 - Auto focus with spatial filtering and pairwise interrogation of (1977-09-06),

12. 4040846 - Optical fluorophosphate glass and process of making same (1977-08-09),

13. 4037238 - Still pocket camera (1977-07-19),

14. 4015275 - Digital timer for a photographic camera shutter (1977-03-29),

15. D243007 - Photographic camera (1977-01-11),

Ernst Leitz G.m.b.H. is a German company specializing in the manufacture of precision optical instruments. It was founded in 1849 and is known for its high-quality cameras and lenses. The company's website showcases a range of products including cine lenses, filters, and accessories. With a long history of innovation and excellence, Ernst Leitz G.m.b.H. continues to be a leading name in the optical industry.

This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Sep 15 2026

Ernst Leitz G.m.b.h.

31 Patents

#7 in Wetzlar

#1,556 in Germany

#21,196 in the World

Wetzlar, Germany

Ernst Leitz G.m.b.h.

Forward Citations = 518

35 inventors:

Ludwig Leitz (6 out of 6 patents)

Heinz Broemer (4 out of 18 patents)

Werner H Holle (4 out of 5 patents)

4. Knut Heitmann (3 out of 13 patents)

5. Hans-Herbert Kaes (3 out of 3 patents)

Please report any incorrect information to [email protected]

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